Initial Operation; Blood Pressure Recorder For 450 F; Applying The Cuff For 450 F - Ergosana Sana Bike 350 F Gebrauchsanweisung

Sana Bike 350 F and 450 F
6

Initial operation

6.1

Blood pressure recorder for 450 F

In order to conduct exercise testing correctly, it is of utmost importance to measure physical perform-
ance data and data from the ECG measurement as well as simultaneously measuring and recording
blood pressure data to determine the reaction of the circulatory system to increased exertion.
For this purpose, ergosana has developed an extremely accurate blood pressure measuring system
that is not susceptible to interference. It has been integrated into this ergometer and uses a so-called
indirect method of blood pressure measurement. The Korotkoff sound, which is created by the air be-
ing forced out of the cuff as blood flows through the area of compression, is recorded along with sev-
eral other important parameters of critical importance to attain accurate measurement. These meas-
urements are evaluated in milliseconds by an internal digital evaluation system and shown in the er-
gometer's display as systole and diastole. The pulse rate is also determined during measurement and
likewise shown in the display. At the same time as they are shown on the display, the measurements
can also be transferred via a RS-232 interface to a peripheral device such as an ECG or pulmonary
function unit for evaluation and recording.
The blood pressure cuff is the measurement sensor for blood pressure. Despite the perfectly function-
ing measuring system, it remains critically important that the cuff is placed on the arm correctly and
carefully.
According to international agreement, the blood pressure should be measured on the left arm, which
is near the heart, as the flow impedance level is lowest there. An exception to this rule is formed by
approx. 1 to 2 per cent of test persons on whom the Korotkoff sound cannot be measured due to vas-
cular phenomena. The cuff is placed on the right arm of such patients.
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Please note that the cuff's air tube must be fixed in a way that prevents it from dash-
ing against the ergometer. This is to prevent unnecessary artefacts that might affect
the measurement's accuracy.
6.2

Applying the cuff for 450 F

The microphone is positioned so that it lies on the brachial artery, the largest arm artery. The location
of the microphone in the cuff is marked with a red fabric tag.
The ideal location for the microphone is approx. 2 centimetres above the elbow joint on the inside of
the arm, below the biceps. The cuff must be put on so it is tight and cannot shift out of position during
the movement created during the stress test.
The cuff is inflated rapidly at the start of the measurement. The blood pressure and pulse rate are
already roughly measured during pumping and the inflation pressure is determined.
After the systolic pressure value has been attained, the air is released from the cuff at a rate of 3
mmHg per heartbeat.
This procedure guarantees approximately equal measuring times despite the rising pulse rate during
exertion.
The blood pressure measurement should not exceed a maximum total length of 45 seconds. One min-
ute is indicated as the shortest measurement interval. A measurement interval of 2 or 3 minutes is
preferable in most cases.
The blood pressure values are shown in the ergometer's graphic display together with the load and
pulse rate graphs.
Article no.: 2.520068 Rev.: b Page 13 of 24